Roberts, P. (1964). English syntax, a book of programmed lessons: A n introduction to transformational grammar. Brace and World.
Lua i Stíl Chicago (17ú heag.)Roberts, Paul. English Syntax, a Book of Programmed Lessons: A N Introduction to Transformational Grammar. New York, Harcourt: Brace and World, 1964.
Lua MLA (9ú heag.)Roberts, Paul. English Syntax, a Book of Programmed Lessons: A N Introduction to Transformational Grammar. Brace and World, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.